Homework Answers
Answer -
In this question option first and second will be correct.
Because once the lac z gene are not transcribe than the lac z shows repression either bind with activator or repressor. According to other option once the repressor is mutated than the expression of beeta galectosidae is constitative and when the opretor bind with activator than the expression of beeta galectosidase is increased .
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Which of these student models shows repression of the lacz gene? Select all that apply. Activator...
Part A Which of the following statements is the best interpretation of the model? Activator aroB...
Part A Which of the following statements is the best interpretation of the model? Activator aroB If an activator binds to the DNA regulatory sequence, then the araB gene is transcribed. If an activator binds to the araB gene, then it is is translated. If an activator binds to the DNA regulatory sequence, then the araB gene is translated. If an activator binds to the coding region of the ara gene, then it is transcribed. Submit Request Answer Part B...
Which is the factor(s) involved in the regulation of gene activity? Select one: a. Transcriptional repressor/activator...
Which is the factor(s) involved in the regulation of gene activity? Select one: a. Transcriptional repressor/activator proteins, which bind to the operator/enhancer sequence regions. b. SAM binding to a riboswitch mRNA. c. Alterations in mRNA conformations by SAM during the transcription. d. All of these. e. None of these.
Expression of genes that are inducible is: (Select all that apply) A. regulated by repression. B....
Expression of genes that are inducible is: (Select all that apply) A. regulated by repression. B. unregulated. C. regulated by induction. D. regulated by activation. E. regulated by phosphorylation.
Which of the following statements is correct concerning operon gene control? Positive control requires an activator...
Which of the following statements is correct concerning operon gene control? Positive control requires an activator protein to stimulate transcription of the structural genes within an operon. In negative control, a repressor protein inhibits or turns off transcription of the structural genes within the operon. An inducible operon normally is not transcribed. It requires an inducer molecule to stimulate transcription either by inactivating a repressor protein in a negative inducible operon or by stimulating the activator protein in a positive...
please answer all questions QUESTION 1 Where do repressor proteins bind? Repressor sequence o 3' UTR...
please answer all questions
QUESTION 1 Where do repressor proteins bind? Repressor sequence o 3' UTR Activator sequence • Operator sequence A frameshift mutation: (choose all that apply) can change the splicing of a protein can change the amino acid sequence can change protein size can revert a deletion mutation QUESTION 3 Which of the following is the critical regulatory stage for the majority of genes? mRNA splicing Initiation of translation mRNA transport • Initiation of transcription QUESTION 4 Attenuation...
Which of the following statements is/are false/incorrect. Select all that apply. You may select multiple options....
Which of the following statements is/are false/incorrect. Select all that apply. You may select multiple options. CAMP levels are negatively correlated with glucose levels E. coli preferentially uses arabinose over glucose Laco (operator) can act in trans Lacl (repressor) can act in trans CAMP binding to CRP facilitates transcription of many operons O Alternative splicing can generate multiple transcripts from the same gene Introns are spliced out of bacterial mRNA before translation Enhancers work in only one orientation and when...
2.) Activator and helper. Figure 19.29B gives the fold change for a genetic network with an...
2.) Activator and helper. Figure 19.29B gives the fold change
for a genetic network with an activator and helper. However, it
contains several mistakes that we will fix here.
a.) Derive the formula for the fold change under the assumptions
of a weak promoter and �!"# $% ≫ �. Show that the fold change is
given by the formula below rather than that in the book. Hint: The
schematic in Figure 19.29B should be helpful in determining the
states and...
Which event may lead to cancer? Select all that apply. A. gene mutation B. functioning p53...
Which event may lead to cancer? Select all that apply. A. gene mutation B. functioning p53 protein C.Rb protein phosphorylating D. Improper replication of DNA during synthesis E. faulty DNA repair Mark for Review What's This?
1. (1 pt) If a gene is repressible and under positive control, A. Is the regulatory...
1. (1 pt) If a gene is repressible and under positive control, A. Is the regulatory protein an activator or repressor? B. Explain how an effector molecule, which binds to the regulatory protein, alters the regulatory protein’s ability to regulate expression of the gene. 2. (1 pt) Cis and trans are two terms used to describe mutations. A. Explain the molecular difference between these terms. B. indicate which type of mutation (cis or trans) is dominant to wild-type and which...
a mutant hunt for genes involved in regulating the expression of the BAK3 gene, which is...
a mutant hunt for genes involved in regulating the expression of the BAK3 gene, which is required to make yeast smell good. Rather than sniffing individual yeast colonies to find relevant mutants, use a reporter to rapidly select for colonies in which BAK3 expression is lost. put the entire BAK3 promoter upstream of the ZOM1 gene. ZOM1 expression makes yeast sensitive to zoomidine, because the Zom1 protein converts zoomidine into a deadly poison. grow mutagenized yeast carrying the [BAK3 promoter-...
Part A Which of the following statements is the best interpretation of the model? Activator aroB If an activator binds to the DNA regulatory sequence, then the araB gene is transcribed. If an activator binds to the araB gene, then it is is translated. If an activator binds to the DNA regulatory sequence, then the araB gene is translated. If an activator binds to the coding region of the ara gene, then it is transcribed. Submit Request Answer Part B...
Which of the following statements is correct concerning operon gene control? Positive control requires an activator protein to stimulate transcription of the structural genes within an operon. In negative control, a repressor protein inhibits or turns off transcription of the structural genes within the operon. An inducible operon normally is not transcribed. It requires an inducer molecule to stimulate transcription either by inactivating a repressor protein in a negative inducible operon or by stimulating the activator protein in a positive...
please answer all questions
QUESTION 1 Where do repressor proteins bind? Repressor sequence o 3' UTR Activator sequence • Operator sequence A frameshift mutation: (choose all that apply) can change the splicing of a protein can change the amino acid sequence can change protein size can revert a deletion mutation QUESTION 3 Which of the following is the critical regulatory stage for the majority of genes? mRNA splicing Initiation of translation mRNA transport • Initiation of transcription QUESTION 4 Attenuation...
Which of the following statements is/are false/incorrect. Select all that apply. You may select multiple options. CAMP levels are negatively correlated with glucose levels E. coli preferentially uses arabinose over glucose Laco (operator) can act in trans Lacl (repressor) can act in trans CAMP binding to CRP facilitates transcription of many operons O Alternative splicing can generate multiple transcripts from the same gene Introns are spliced out of bacterial mRNA before translation Enhancers work in only one orientation and when...
2.) Activator and helper. Figure 19.29B gives the fold change
for a genetic network with an activator and helper. However, it
contains several mistakes that we will fix here.
a.) Derive the formula for the fold change under the assumptions
of a weak promoter and �!"# $% ≫ �. Show that the fold change is
given by the formula below rather than that in the book. Hint: The
schematic in Figure 19.29B should be helpful in determining the
states and...
Which event may lead to cancer? Select all that apply. A. gene mutation B. functioning p53 protein C.Rb protein phosphorylating D. Improper replication of DNA during synthesis E. faulty DNA repair Mark for Review What's This?
a mutant hunt for genes involved in regulating the expression of the BAK3 gene, which is required to make yeast smell good. Rather than sniffing individual yeast colonies to find relevant mutants, use a reporter to rapidly select for colonies in which BAK3 expression is lost. put the entire BAK3 promoter upstream of the ZOM1 gene. ZOM1 expression makes yeast sensitive to zoomidine, because the Zom1 protein converts zoomidine into a deadly poison. grow mutagenized yeast carrying the [BAK3 promoter-...
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